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US 2006/0186850 A1Published application
Fan motor drive control apparatus
AssigneeNidec Sankyo Corporation
InventorYukinobu Kurita
Life of this patent
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Abstract
A fan motor drive control apparatus comprises a plurality of drive circuits for driving respectively a plurality of fan motors, and a speed change-over control circuit for transmitting a control signal for changing over speeds of the fan motors, to the plurality of the drive circuits, wherein each of the drive circuit comprises a stopping detection terminal for detecting stopping of a fan motor as an object to be driven, and the speed change-over control circuit transmits the control signal in accordance with a signal received from the stopping detection terminal.
Claims5
A fan motor drive control apparatus comprising:
- a plurality of drive circuits for driving respectively a plurality of fan motors;
- and
- a speed change-over control circuit for transmitting a control signal for changing over speeds of the fan motors, to the plurality of the drive circuits, characterized in that each of the drive circuit comprises a stopping detection terminal for detecting stopping of a fan motor as an object to be driven, and the speed change-over control circuit transmits the control signal in accordance with a signal received from the stopping detection terminal.
Dependencies are inferred from the claim text.